John 6:60
So many of His disciples, when they heard it, said, "This teaching is hard to take in. Who can listen to it?"
John 6:66
As a result of this many of His disciples turned their backs on Him and stopped accompanying Him.
Matthew 11:6
And happy is the man who finds no cause for stumbling over me."
John 6:41-42
Then the Jews began to grumble about His saying, "I am the bread that came down out of heaven."
John 8:31
So Jesus said to the Jews who believed in Him, "If you live in accordance with what I teach, you are really my disciples,
John 8:43
Why is it that you misunderstand what I say? It is because you cannot listen to what I teach.
Hebrews 5:11
I have much to say to you about Him, but it is difficult to make it clear to you, since you have become so dull in your spiritual senses.
2 Peter 3:16
speaking of it as he does in all his letters. In them are some things hard to understand, which the ignorant and unsteady twist to their ruin, as they do the rest of the Scriptures.